This document contains the questions and answers to a mathematics exam called the SEAMO 2018 Paper A. It includes 25 total questions ranging from multiple choice to free response. The multiple choice questions are worth 3 marks each and cover topics like patterns, geometry, time, and arithmetic. The free response questions are worth 4-6 marks each and involve more complex multi-step word problems relating to topics like sequences, ratios, and algebra. The document provides the full questions along with the corresponding answers.

2. SEAMO 2018 Paper A © TCIMO 1
1. Find the missing number.
3 , 4 , 7 , 11 , 18 , ( ) , 47 , …
(A) 27
(B) 28
(C) 29
(D) 31
(E) None of the above
4. Evaluate
1 + 2 + 3 + ⋯ + 9 + 10 + 9 + 8 + ⋯ + 2 + 1
(A) 89
(B) 90
(C) 99
(D) 100
(E) None of the above
5. Find the 50th
digit in
3 5 8 0 3 5 8 0 3 5…
(A) 3
(B) 5
(C) 8
(D) 0
(E) None of the above
2. How many cubes are there in the
figure below?
(A) 13
(B) 14
(C) 15
(D) 16
(E) 17
6. Find the value of the star.
(A) 5
(B) 6
(C) 7
(D) 8
(E) None of the above
3. Find the value of M.
(A) 3
(B) 4
(C) 5
(D) 6
(E) 7
QUESTIONS 1 TO 10 ARE WORTH
3 MARKS EACH

3. SEAMO 2018 Paper A © TCIMO2
7. Find the missing figure below.
(A)
(B)
(C)
(D)
(E) None of the above
9. My grandmother is 56 years old.
My mum is 31 years old.
I am 7 years old.
In how many years is the sum of our
ages 100?
(A) 5
(B) 4
(C) 3
(D) 2
(E) 1
10. What time should come next in the
sequence below?
(A) 5:10 PM
(B) 5:20 PM
(C) 5:30 PM
(D) 5:40 PM
(E) 5:50 PM
8. Find the missing number.
(A) 31
(B) 33
(C) 29
(D) 32
(E) None of the above

4. SEAMO 2018 Paper A © TCIMO 3
11. Mohammed wrote the numbers 1 to
24 on the whiteboard as shown:
1 2 3 4 5 6… 2 2 2 3 3 2 4
How many times did he write the
digit ‘2’ altogether?
(A) 5
(B) 6
(C) 7
(D) 8
(E) 9
13. Which of the following figures can be
traced without lifting your pencil and
without tracing over the same lines?
(A) All except Fig 1
(B) All except Fig 2
(C) All except Fig 3
(D) All except Fig 4
(E) All of the above
12. Basket A has 54 apples. Basket B has
18 apples. Cindy moves 6 apples at a
time from Basket A to Basket B. How
many times must she do this so that
both baskets have the same number
of apples?
(A) 3
(B) 4
(C) 5
(D) 6
(E) None of the above
14. The digits 2, 4 and 7 can form six
different 2-digit numbers. What is the
difference between the largest and
smallest of these numbers?
(A) 48
(B) 50
(C) 52
(D) 54
(E) None of the above
QUESTIONS 11 TO 20 ARE WORTH
4 MARKS EACH

5. SEAMO 2018 Paper A © TCIMO4
15. There are 26 chickens and rabbits in
a farm. The farmer counted 80 legs
together.
How many rabbits are there on the
farm?
(A) 14
(B) 15
(C) 16
(D) 17
(E) None of the above
17. What do we get if all the figures are
stacked on top of each other?
(A)
(B)
(C)
(D)
(E) None of the above
16. How many triangles are there in the
figure below?
(A) 7
(B) 8
(C) 9
(D) 10
(E) 11
18. John paid $12 for 2 pens and
2 pencils. Mark paid $22.50 for 2 pens
and 5 pencils. How much is a pencil?
(A) $3.20
(B) $3.50
(C) $3.80
(D) $4.10
(E) $4.30

6. SEAMO 2018 Paper A © TCIMO 5
19. Shawn stays in the 6th
floor of an
apartment block. Jessie stays in the
3rd
floor of the same block. If Shawn
takes 4 minutes to walk from the
1st
floor to Jessie’s apartment. How
long, in minutes, does he take to
walk from the 1st
floor to his own
apartment?
(A) 6
(B) 8
(C) 10
(D) 12
(E) None of the above
22. There are 7 days in a week. If today
is Tuesday, on which day of the week
is the 100th
day from today?
23. The masses below are measured in
grams.
What is the mass of A?
20. Find the value of the square.
(A) 67
(B) 79
(C) 83
(D) 87
(E) None of the above
24. Each row represents one of the
following numbers: 892, 485, 364,624.
Which number does Row 2 represent?
21. Find the sum of first 48 numbers in:
1 , 3 , 5 , 7 , 8 , 1 , 3 , 5 , 7 , 8 , 1 , 3 , …
QUESTIONS 21 TO 25 ARE WORTH
6 MARKS EACH

7. SEAMO 2018 Paper A © TCIMO6
25. 97 numbers are arranged in the
sequence as shown below.
What number does M represent?
End of Paper

8. © SEAMO 2018 Paper A 1
SEAMO 2018
Paper A – Answers
Multiple-Choice Questions
Questions 1 to 10 carry 3 marks each.
Q1 Q2 Q3 Q4 Q5
C E C D B
Q6 Q7 Q8 Q9 Q10
E B A D C
Questions 11 to 20 carry 4 marks each.
Q11 Q12 Q13 Q14 Q15
D A C B A
Q16 Q17 Q18 Q19 Q20
D B D C C
Free-Response Questions
Questions 21 to 25 carry 6 marks each.
21 22 23 24 25
225 WEDNESDAY 128 624 64